Know how to ask. There is nothing more difficult for some people, nor for others, easier.
Censure is like the lightning which strikes the highest mountains.
Never open the door to a lesser evil, for other and greater ones invariably slink in after it.
Begin with another's to end with your own.
None is so perfect that he does not need at times the advice of others.
Attain and maintain a reputation, for it is the usufruct of fame. A stiff climb, for it is the issue of excellence, as rare as mediocrity is common.